Distance and speed indicator and recorder.



, T, J. BARRE T. DISTANCE AND SPEED iNDiClUOR AND RECORDER.

APPLICATION FILED JUNE 8. IBIS.

1 1377359 Patented Sept. I), 19% 1 2 SHEETS-SHEET l,

Svwawfoz T. J. BARRETT. DISTANCE AND SPEED INDICATOR AND RECORDER.

APPLICATXON FILED JUNE a 19:51

1,277,359. Fig. 2. w I Z-SHEEYTS SHEET 2.

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Patenteflept. 3, M6;

ITED

()FFICE,

.lltIGlllIdS J". BARRETT, 0F IBVINGTON, NEW JERSEY, ASSIGNUR, BY MESNE MENTS, 1'0 AUTOGRAPHIC RECORDER GQMPANY, (3F NEVARK, NEW JERSEY, A tlfilth IGRATION or new JERSEY.

DISTANCE AND SPEED INDICATOR AND RECDRIJEEl Specification of Letters Patent.

Patent-ed Sept. 3, 1918,

Application filed June 8, 1915. Scriai 310. 32,859.

This invention relates to instruments inruse in indicating and recording the distance and speed of travel. of a vehicle, such as a locomotive or an automobile.

I have heretofore devised an instrument for this use having a shaft adapted to be driven by a Wheel of the vehicle, a rod which is reciprocated axially by the shaft, a marker carried by the rod and a traveling tape driven by a clockniechanism and cooperating with the marker so that the-ta e receives a series of waves the shape of w ich is indicative of the speed of travel of the vehicle at all times throughout the period of use of the instrument.

In combination with these )arts, a counter was provided for re istermg the total distance traveled by tie vehicle and also a centrifugal speed indicator actuated by the shaft driven from the wheel of the vehicle and operatin an index adapted to moveovcr a suitab e scale. I have found that the utility of such an instrument may be greatly increased by the provision of a second recording device for making a record of the speed of travei of the vehicle by means of a second marker upon the travcling tape, this second recording means being actuated directly from the centrifugal member of the speed indicator. The record of speed so made is more direct in its readings and may therefore be more readily understood. Furthermore, the direct connection of the second marker to the centrifugal member, which member also is directly con.- nected to the speed indicator, makes the curve drawn by this second marker an ex act record of what was seen or should have been seen by the engineer of the locomotive or the operator of the vehicle, so that opportunity for differences of opinion as to the accuracy ofthe readings of the instru ent or the soundness of conclusions drawn cm the rechrds is greatly decreased or iiholly eliminated. l have therefore improved and increased the utility of the instalment here" tofore devised by me by combining with the speed recorder, consisting of a reciprocating rod and a marker thereon adapted to dravv a Wavy line upon a traveling tape, and the speed indicator actuated by a centriiugal member, a second speed recorder actuated directly by the centrifugal member and adapted to draw a curve on the tape the shape of which is directly proportional to changes in the speed of tr'avel oi the vehicle I have illustrated the preferred embed? mentof my invention in the accompanying drawings, in which Figure 1 1s a front view of the instrument broken away in part, and

u u (l I v w a Fig. 2 1s aevertical sectlon oi the instrument. I

Referring to thesedrawings, the instruv ment is inclosed withina rectangular casing 3 having a removablehase plate '1 upon which most of the operating mechanism mounted A. supporting structure 8 cast integral with the plate 7 and in this stifuc ture is a bearing for a rotary shaft 9. This plate 7 is provided with a hosslG through which connection is made to the shaft On the shaft 9 is a worm l1 meshing with the worm wheel 12 mounted for rotation on a stub shaft journaled in the support This shaft also carries a heart-shapedcaoi 13 adapted toactuate a reciprocating rod 1% which is supported inhearings formed in shelves 1 and 16 cast integral with the port 8. The rod 14 carries a roller at lower end" adapted to travel upon the pee riphery of the cam 13. Secured on the rod 14. is an arm 17 to which pins 18 are-aflixed. These pins lie on opposite sides oj the oper ating a m of a counter 19 so that as the rod 14. is moved up and down, the pinlS open ate the counter once for each rcciprocatory movement of the rod 14:, that is, once for;

shaft is'adapted to be driven from the wheei of the locomotive or other vehicle and the upon the rod 14:, this spring wrvmg to move the rediddownwardly aud hold its lower end in contact with the eriphery of cam l3.

The upper endofrod an opening in the casing'ti and on its upper; end this rod carries a marker- 21 of any It extends through.

suitable construction adapted to mark upon a tape 22. This tape is supplied'from a re has ceptacle 23 and passesover a supporting surface 'which supports the tape at the point when the markslire made by the marker 21. tape is'wound upon a roller 25 which 1 arried by an arm 26 pivotally mounte pen the .top of: the casing 6 and adapted who turned upon its pivot by a coiled spring 27. The tape is fed at a uniform rate of speed by a disk 28 whose edge 1 is knurled as shown.' The periphery of this disk engages the paper wound upon the is secured to the rear face of the support 8.

This clock mechanism may be rewound by applying a key to the squared end of the shaft 41 of the main spring. This end of the shaft extends into the sleeve -12 mounted in an opening-in the front wall of the casing 6.

A shaft 48 is mounted for rotation in bear ings formed in the shelf 16 and in a shelf l-l projecting forwardly from the sppport 8. This shaft 43 has a centrifugal member 45 pivotally mounted thereon and preferably in the form of a ring. Shaft l3 also carries a sleeve 48 slotted to receive spin 4-? on the shaft so that the sleeve will rotate with the shaft. This sleeve is normally pressed downwardly by a spring 48 coiled on. the shaft 4C7, but it may be raised against. the tension of the spring by turning movement of the centrifugal member '45. For this purpose the member 45 is connected by a rod (58 to adisk 49 secured to the lower end of the sleeve 46. The disk l9 is connected to the upper end of a reciprocating rack 50 by .means of a yoke 69 secured to the upper end of the rack 50 and having its arms lying on oppositesidcs of the disk. The rack 50 is mounted for vertical movement in a holder 51. The teeth of the rack mesh with agcar 52 and an intermediate gear 53 connects the gear 52 with a gear 5% on the shaft of an index ihe shaft'of this index passes through an opening in-the front wall of the casing 6 and the index is adapted to move over a suitable scale 56 covered by and' marked (as with spaces properly designated, as for instance, in miles per hour. A spring 57 is connected at one end to the shaft of the. index 55 and at the other end to an adjacent portion of the casing; this spring serves to retract the index to the Zero position and also acts through the gearing above dcscribed to move the rack 50 as the sleeve 46 moves downwardly. The shaft is driven.

from the shaft 9 through speed multiplying gearing so that shaft 43 1S rotated at a speed rat-teas substantially in excess of that of the shaft 9. F or thispurposea train of gears shown mounted upon the shelf 15 and serving to transmit the rotary motion of shaft 9 to shaft a3.

A second marker is provided for drawing a. curve upon the traveling tape, this marker bcin actuated dircctl from the centrifugal a: .Y .r

member i5 so that its movements follow (31'- actly the movements of the speed indicator j 55 and so that the curve drawn by the marker shall be an exact record of the indicated speed. The second marker shown at 70. It is carried by a pivoted arm. 71 mounted upon a stud 72 extending upwardly f 9111 the top of the casing (i. The arm is if punted on the stud by means of a link 73 pivotally connected at one end to the arm and at the other to the stud so that the point of'pivotal connection of the arm 71. to the link may move horizontally While the arm is being turned about its pivot. The arm 71 is actuated in accordance with the angular movements of the centrifugal member by means of a rod TL connected to the arm 71' and extending downwardly there from through openings in the top of the casing 6 andin the shelf 16. At its lower end, the

rod 74 carries a yoke 75 similar to yolteGQ and having its arms sides of the disk 49.

The operation of the instrument thus constructed will be understood from the fore going description of tlIQCOHStlUClJiOI]. The shaft 9 is driven from the wheel of the vehicle and serves to rotate the cam 23 through the gears 11 and 12. The cam thus'rotated reciprocates "the rod 14 and thus causes actuation of the counter 19 to registor the total distance of travel of the vehicle. Also, as the rod 14.- is reciprocated, the marker 21 thereon is moved up and down across the traveling tape 22 and draws a wavy curve on the tape, as shown in Fig. 1. The shape of the curve-so drawn and the distance between successive undulations of Mlle curve form a permanent record of the speed of travel of the vehicle. Also, when the shaft 9 is rotated, the shaft 43 simnltaneously rotated, and as its speed varies, the angular position of the centrifugal member 45 varies accordingly. Such angular movement of the member causes movement of the index 55 over its scale 56 so that the position of the index with refcronce to its scale indicates at any time the speed of travel of the vehicle at that time. Also, the angular movement of the member this accompanied by simultaneous and proportional movement of the arm 71 carrying the second marker 70,.50 that a second curve is drawn upon the traveling tape 22 by the marker..7'0, which curve corre sponds exactly with the positions assumed by the index 55 with reference to the scale extending on opposite tea .56. This curve is therefore a direct 'reading record of the speed of the vehicle and a permanent record of what was seen or should have been seen by tile operator of the vehicle by referencettdthe index 55 and l scale 56. In the drawings, the curve drawn v by the second marker 70 is represented at 76; however, only the general form of this curve is illustrated, no efl'ortbeing made to have the shape of the curve conform to the speeds indicated by the shape of the curve 7 made by the marker 21.

What I claim is:

1. In a vehicle speed and distance indicator mechanism having a shaft adapted to be driven at variable speed, with a cam mounted thereon for actuating a rod provided with a marker adapted to move over a. tape that is driven by a clock mechanism to produce an undulating record from which the speed of the vehicle may be determined, and provided also with a centrifugal member driven 'by' the shaft and adapted through actuating mechanism "to move an indicator to show directly the speed of the vehic1e,'- the combination with said centrifugal member, of a member responsive to t e movements thereof, and a 'marker associated with the member-for ro ducing on the tape a record correspon ing to the movements of the indicator, thereby giving a record of the speed of the vehicle which may be read directly; substantially as described.

2, In a vehicle speed and distance i'ndi-I cator mechanism having a shaft adapted to be driven at-variable speed, with a cam mounted thereon for actuating a rod pro- 1 vided with a marker adapted to'move over a tape thatis driven b to produce an undu ating record from position for marking upon the ture. a clock mechanism.

which the speedof the vehicle may be'dev termined, and provided also with a centrifugal member driven 'by the shaft and adapted through actuating mechanism to move an indicator to show directly the speed of the vehicle, the combination with said centrifugal member, of a member responsive to the movements thereof, an arm connected to said member, and a marker on the end of the arm adapted to produce on the tape a record correspondin to the movcments of the indicator, there y giving a record pf the speed of the vehicle which ma be read directly; substantially as describe 3. In a vehicle speed and distance indi cator mechanism having a shaft adaptedto be driven at variable speed, with a cam mounted thereon for actuating a rod pro-;

'vided with'a marker adapted to move over a tape that is driven by a clock mechanism to produce an undulating record I from whichthe speed of thevehicle may be, determined, and provided also with a centrif- 'ugal' member driven by the shaft and adapted through a sleeve and. gearing to move an indicator to show directly the speed of the vehicle, the combination with said centrifugal member, of an arm, a "marker mounted on one end of the arm in tape, a link pivotally connected to the other end of the arm, a support to which the link is pivotally connected, and a rod connecting the arm to the sleeve, whereby the mark made by the marker shall correspond at all tin' to the indications of said index; substadescribed. I V

In testimony whereof I aifix my signa- THOMAS J. BARRETT.

oily as V 

